Carbon Footprint Calculator — Personal CO2 & Climate Change

The average European produces approximately 7.5 tonnes of CO2 equivalent per year — but this varies enormously based on how you travel, what you eat, and how your business and home consume energy. Climate change is driven by the cumulative sum of these individual choices, and a personal carbon footprint calculator gives you the clearest view of where your emissions come from and which changes would have the most impact.

Transport and diet are the two biggest levers. A single long-haul return flight adds 1–2 tonnes of CO2e — equivalent to months of other emissions. Switching from an average omnivore diet to a vegetarian diet reduces food-related emissions by approximately 30%, and a plant-based diet can cut them by 50%. For students and households tracking sustainability goals, this calculator breaks down all four categories — transport, home energy, diet, and shopping — so you can see the full picture.

Beyond individual choices, business and consumption habits play a significant role. New clothing, electronics, and goods all carry embedded carbon from manufacturing. Sustainability-minded consumers and businesses increasingly use CO2 calculators to set targets and track progress against national climate commitments. Results are shown in tonnes CO2e (carbon dioxide equivalent), which converts methane and nitrous oxide into a common warming-impact scale.